What products will most likely be observed in a combustion reaction?
Oxides, and water (and water is an oxide of hydrogen).
Typically we combust hydrocarbons; certainly, we do so in order to make our goggomobiles go.
If we represent petrol or diesel as hexanes:
Of course combustion is never complete in an internal combustion engine; some products of incomplete combustion result, i.e.
Are mass and charge conserved in these reactions? If not, they should be!